Wireless microphone



FIG. 1 is a top front right perspective view of a wireless microphone showing our new design;

FIG. 2 is a top rear left perspective view thereof;

FIG. 3 is a front view thereof;

FIG. 4 is a rear view thereof,

FIG. 5 is a left side view thereof;

FIG. 6 is a right side view thereof;

FIG. 7 is a top view thereof; and,

FIG. 8 is a bottom view thereof.

The broken lines form no part of the claimed design. 

The ornamental design for a wireless microphone, as shown and described. 